The retail giant has shaved $20 off a $100 iTunes electronic gift card. For your $80 purchase, Wal-Mart sends you a PIN, which you can use on an iTunes spending spree or e-mail to someone else as a gift.

The PIN is usually delivered within a few minutes, according to the company, but could take as long as 48 hours, so be patient if you don't receive it right away.

The gift cards are not returnable or refundable, so you or your recipient will have to spend the full amount on apps, music, movies, TV shows, books, or anything else you can find in Apple's store.

And if the latest rumors are true, Apple buyers will have several new devices next month to load up with apps, music, and other items. Reports claim that the company will unveil not just a new iPhone but an iPad Mini at a September 12 launch event.